PII

PII may refer to:
 * Personal data, also known as personally identifiable information (PII)
 * Pentium II, a computer processor
 * Polaris Inc., New York Stock Exchange stock symbol PII
 * Public-interest immunity, previously known as Crown privilege, in English common law
 * Publisher Item Identifier, in scientific journals
 * Professional indemnity insurance
 * Proto-Indo-Iranian language
 * Indonesian Islamic Party